Absolutely no apologies necessary. We all have to start somewhere. One of the hardest problems with figuring out what the chicks will look like is figuring out what genetics you have to begin with.
From the photos I can’t tell what that rooster has genetically. I’d guess he is mixed up some, many of the really pretty ones are. I’ll try to make some guesses. I think he may have some birchen in him and probably all gold, no silver. I could easily be wrong.
With your RIR’s, probably red chicks with black markings once they feather out. You could see a lot of black feathers too but should have red around the head area.
With the Barred Rock you will probably get solid black hens (though some red could bleed through on a few feathers. The cockerels should be black barred, a lot like the barred Rock hens. You may or may not be able to tell on the down but they should be black sex links. If the chick has a white spot on its head at hatch it’s probably a male. If there is no white spot, probably a female.
With the Buff’s, well Buff can be a bit hard. Buff has some modifiers that can do some strange things. Most likely you will get sort of orange colored chickens with black markings like a black tail but don’t be surprised to see some yellow/gold coloring. I think these have the potential to be really pretty.
Good luck on the hatch, it should be a lot of fun. It will be stressful too but you’ll have real success.
